NSE relay - Over- and undervoltage
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- Avis Nichols
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1 - Over- and undervoltage Datasheet monitoring Features Overvoltage and undervoltage monitoring relay with delay on pull-in AC input (50 Hz) 2 C/O contacts Overvoltage and undervoltage adjustable via lockable knobs Overvoltage adjustment: % Undervoltage adjustment: % Delay time adjustable via lockable knob Time delay range: s Auxiliary power supply necessary Auxiliary power supply failure also detected Screw terminals IP 20 Mounting on 35 mm rail Mounting on any surface via 2 screws Benefits (Picture shows NSR relay) Description Overvoltage and undervoltage monitoring railway relay with two change-over contacts. Suitable for AC 50 Hz voltages. Auxiliary power supply necessary, either DC or AC ( Hz). When the relay is activated there is a delay on pull-in. The delay time is adjustable with a lockable knob. The overvoltage and undervoltage are also adjustable with a lockable knob. The NSE-relay has a fail-safe circuit: also an auxiliary supply failure is detected. The construction of the relay and choice of materials makes the NSE-relay suitable to withstand corrosive atmospheres, low and high temperatures, shock & vibrating and dry to very humid environments. No external socket necessary, the relay can be mounted directly on a 35 mm rail without extra fasteners, or on any surface via 2 screws. Application These relay series are designed for rolling stock applications. The NSE-relay is used in applications for overvoltage and undervoltage monitoring. Proven reliable Long term availability Easy to maintain Low life cycle cost No maintenance Railway compliancy EN Electronic equipment used on rolling stock for railway applications IEC Electronic equipment used on railway vehicles IEC Electrical equipment for rolling stock in railway applications IEC Low voltage switch gear and control gear IEC Rolling stock equipment - Shock and vibration test IEC Electromechanical components for control applications EN Electromagnetic compatibility for railway applications 1
2 Technical specifications (Pictures show NSR relay) Functional and connection diagrams Timing diagram Relay pin correspondence Vin Vout t t Connection diagram 2
3 Technical specifications Input characteristics Type Unom (VAC) Umax (VAC) Frequency (Hz) NSE NSE NSE Adjustment Overvoltage % Undervoltage % Delay-on time s Max. power interruption Nom. power consumption 10 ms < 3 VA Accuracy - adjustment < 5 % Accuracy - repeatability < 1 % Hysteresis < 1 % Auxiliary supply characteristics Type Umin (V) Umax (V) fnom (Hz) L H
4 Technical specifications Contact characteristics Amount and type of contacts 2 C/O Maximum make current 14 A Maximum continuous current 8 A (AC1 ; IEC 60947) Maximum switching voltage 300 VDC 250 VAC Minimum switching voltage 12 V Minimum switching current Material Electrical characteristics 100 ma AgCdO Dielectric strength EN Pole - pole IEC kv, 50 Hz, 1 min Cont-coil IEC kv, 50 Hz, 1 min Input - output 3.5 kv, 50 Hz, 1 min Input - supply 4 kv, 50 Hz, 1 min Insulation between open contacts 1 kv; 50 Hz; 1 min Pulse withstanding IEC kv (1.2 / 50 μs) Mechanical characteristics Mechanical life Maximum switching frequency Maximum torque value screw to lock knob Weight 20 x 10 6 operations Mechanical 3600 ops/h Electrical 1200 ops/h 0.15 Nm 40 g Environmental characteristics Environmental EN and IEC Vibration IEC 61373, Category I, Class B, Body mounted Shock IEC 61373, Category I, Class B, Body mounted Operating temperature -25 C C Humidity 95 % Damp heat IEC , Test method Db variant 1 Protection IEC 60529, IP20 Insulation materials Cover: polycarbonate 4
5 Technical specifications Dimensions (mm) 5
6 Instructions Installation, operation & inspection Installation Before installation or working on the relay: disconnect the power supply first! Install relay and connect wiring according to the terminal identification. Relays can be mounted tightly together to save space. When rail mounting is used, always mount the relay with the text on the label readable (not upside down) to have proper fixation of the relay on the rail. Warning! - Never use silicon in the proximity of the relays. - Do not use the relay in the presense of flammable gas as the arc generated from switching could cause ignition. Operation After installation always apply the rated current to the coil to check correct operation. Before actual use of relays, it is advised to switch the load several times with the contacts. The contacts will both be electrically and mechanically cleaned due to the positive wiping action. Sometimes a contact can build up increased contact resistance (< 15 mw when new). When using silver contacts one can clean the contact by switching a contact load a few times using >24 VDC & ~2 A. Increased contact resistance is not always problematic, as it depends on circuit conditions.in general a contact resistance of 1 Ω is no problem, consult Mors Smitt for more information. Condensation in the relay is possible when the coil is energised (warm) and the outside, environmental temperature is cold. This is a normal phenomenon and will not affect the function of the relay. Materials in the relay have no hygroscopic properties. Inspection If the relay does not seem to operate correctly, check for presence of the appropriate coil current using a suitable multimeter. The LED shows presence of the auxiliary power supply. If the relay doesn t work after inspection, replace the relay unit with a similar model. Do not attempt to open the relay cover or try to repair. Contacts are calibrated and in balance, touching can affect proper operation. Also resoldering may affect correct operation. Most relay defects are caused by installation faults such as overvoltage, spikes/transients, high/short current far exceeding the relay specifications. When returning the relays for investigation, please provide all information on the RMA form. Send defective relays back to the manufacturer for repair or replacement. Normal wear and tear or external causes are excluded from warranty. 6
7 Ordering scheme Configuration: NSE L 1. Relay model 2. Nominal voltage 3. Auxiliary supply This example represents a NSE-110-L Description: NSE series relay, Unom: 110 VAC, auxiliary supply type L 1. Relay model NSE 2. Nominal voltages VAC, 50 Hz VAC, 50 Hz VAC, 50 Hz 3. Auxiliary supply L H VDC/VAC, Hz VDC/VAC, Hz 7
8 Mors Smitt France SAS Tour Rosny 2, Avenue du Général de Gaulle, F Rosny-sous-Bois Cedex, FRANCE T +33 (0) , F +33 (0) E sales.msf@wabtec.com Mors Smitt Asia Ltd. 29/F., Fun Towers, 35 Hung To Road Kwun Tong, Kowloon, HONG KONG SAR T , F E sales.msa@wabtec.com Mors Smitt B.V. Vrieslantlaan 6, 3526 AA Utrecht, NETHERLANDS T +31 (0) , F +31 (0) E sales.msbv@wabtec.com Mors Smitt Technologies Inc Johnson Drive, Buffalo Grove, IL , USA T , F E salesmst@wabtec.com Mors Smitt UK Ltd. Graycar Business Park, Barton under Needwood, Burton on Trent, Staffordshire, DE13 8EN, UK T +44 (0) F +44 (0) E sales.msuk@wabtec.com RMS Mors Smitt Ltd. 6 Anzed Court, Mulgrave, VIC 3170, AUSTRALIA T +61 (0) F +61 (0) E rms@rmspl.com.au (c) Copyright 2015 All rights reserved. Nothing from this edition may be multiplied, or made public in any form or manner, either electronically, mechanically, by photocopying, recording, or in any manner, without prior written consent from Mors Smitt. This also applies to accompanying drawings and diagrams. Due to a policy of continuous development Mors Smitt reserves the right to alter the equipment specification and description outlined in this datasheet without prior notice and no part of this publication shall be deemed to be part of any contract for the equipment unless specifically referred to as an inclusion within such contract. Mors Smitt does not warrant that any of the information contained herein is complete, accurate, free from potential errors, or fit for any particular purpose. Mors Smitt does not accept any responsibility arising from any party s use of the information in this document.
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